Pseudon-random Code of Direct-sequence Spread-spectrum Commnunication System

Spectra expanding of Spread spectrum communication system makes use of the spread spectrum function to realize, the typical spread spectrum function is pseudo random sequence code. This paper popularly introduces the principle, property and conforming method of the random code. It also introduces the method of obtaining, calculating and making up set volume by using computer from igional multionmial and recursion formula. The simple methode is convenient for engineering personel to refer to.